PCConnect is a 3rd party media connect. It is an "add in" in your Home Server Console (same place where you see the anti-virus).
If you upgrade the RAM and it improves SqueezeCenter, let me know! But I have some doubts. They improved nagivation quite a bit in one of the upgrade last year (7.3.1, I think). They are constrained by requests for "album art" that is sometimes required for one screen that you just pass through and then have to wait until the command is properly processed to see the new menu.
